This is one of the most atrocious rewrites I've ever viewed. If they want to make a movie with a lousy story, they should refrain from giving it a title of a fine book. There is hardly a relation between Wolfe's book and this movie other than the title. I don't mind changes if they help a story flow on screen. At least the changes shouldn't hurt the final product. The last scene in the movie is painfully unconvincing. The actors are miscast. The director and/or screen writer obviously could not decide whether to make a lame comedy or preach an unconvincing sermon.
If you've seen this movie and disliked it, try the book. If you've seen this movie and liked it, read the book.